Sheet-metal door.



N.I P. SJOBRIN SHEET METAL DOOR.

APPLIOATIONPILBD DB0. 3, 1910.

Patent N. l. SJOBRING.

SHEET METAL DOOR. APPLICATION FILED DBO. 3, 1910,

1,003,070, Patented sept. 12,1911.l

lZ SHEETS-SHEET 2.

y vided and these with Till STATES PATEN NILS l?. SJTOBRING, OIF CHICAS- ILLNOIS..

sneer-Marat noon.

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lb all 'whom "it may comers.:

it known that l', Nits P. S-JonaiNo, a citizen of the United States, residingl at in the county of Cook and State of illinois, have invented cert-ain new and usefulImprovements in Sheet-Metal Doo-rs, of which the 'following is a specitication.

This invention relates to certain new and useilufl improvements in sheet-metal doors and the like, and the :invention .consists of the parts and constructions, arrangements and combinations et parts which l will here'- inafter describe and claim.

An important object of the invention is to devise a new and siinpliiied method of torrning the door or like article of a front and back plate each of which is constructed from a single piece of sheet-metal, each ot'. said sheets being fashioned to forni the top, bottom and center cross rails of the door and also'portions of moldings.; suitable separate molding pieces, of sheet-metal are also proth-e permanent 1nolding" portions formed on the front andl rear sheets first mentioned, are provided with means to? readily securingthem in matching relation to the molding portions ot the said front and rear sheets, all ,of which I will herein-after fully describe.

ln the accompanying drawing, toi-mingn part ot' this specification, andvin which sirnilar reference characters indicate like parts in the several Views; Figure l is a vertical section: of a door embodying the salient teatti'rcs of my invention. Fig. 2 is a vertical longitudinal sectional View of part of a door of modiied construction. Figs. 3 and l are enlarged sectional perspective views of portions ot the door. Fig. is a perspective of the separate molding detached.

in the present construction oit l :torni the panel or panels and; middle cross rails of one piece oit sheet metal ot the character usually employed in the manufacture of sheet metal doors, win* dows, wainscoting, etc. This will be understood from l? i where the front and back plates, A and B, and which represent the opposite sides of the door, are each formed integrally with the top cross rail, o, the bottoni cross rail, b, the middle cross rail c, and the panels, d; the plates are also tashioned with some appropriate design ot' pernia nent molding, e, bordering the panels.

l'he Stiles, C, are preferably formed of a single piece of sheet metal bent into rectanniy door, and top, bottom,

Specification of Letters Patent. Patgeifg@ Sep-L 12%, 1911 Application filed Eecember 3, 1910.

serial no. 595,547.

guiar or other suitable shape incross seetion, and having a length eqn-al tol the desired height of the door. Each stile coniprises the parallel portions, f, g, which are spaced apart `a distance equa-l to the thickness of the door from front to rear, the inner edges of these plates being' bent into foi-1n and suitably disposed and being welded, soldered or otherwise closely and strongly connected to the adjacent edges of the plates which torni theI rails and panels of the door.

The .tree edges of the panels are held in posit-ion and clamped to the corresponding edges ot the stiles by a combination ot' two sepa rate molding mein-bers which are formed with interlocking members, as l will now explain. What I term the inside molding, is a strip or plate, D, which extends across the inside between thev free edges of the plates forinihg the stiles, said free edges of the stiles being bent at 2 and the side edges 3 of the inner molding; member, B, being correspondingly bent whereby the edges, overlap as shown in Figs. 1,. 3 and 4, and may be welded, soldered or otherwise tinally rigidly connected. i

Along the center, the inner molding ineinber, D, is fashioned with a channel D", preferably rectangular in cross section, and

v ot a width slightly in excess of the thickness of the panel. and into which channel 'the edge of the panel and a corresponding portion of the outer inolding' member, F, are designed to tit and tov be secured..

The outside separate molding` member, F, isconstructed of a single piece as indicated in Fig. 5.' Yl't is bent at its central portion to forni a channel, l5", which is substantially rectangular in cross section', this bent portion being of such width that it will lit within Vthe depressed portion or channel, D', formed in the center of the-inside molding member-,D The depressed channel consti tutes two parallel walls, 5-6, between which the panel, ci, is adapted to tit; from the outer edges of the walls, 5MP), the outside molding plate may be given any desired carved or other ornamental forni, while its outer edges will be bent, say substantially parallel with the walls 5--6, and parallel with the come sponding outer walls ofthe inside molding plate. Between the parallel walls, 7, and 8, of the outer edges of the inside and outside molding members, the free edges of the bent plates which form the Stiles are passed., and

ving for the panel, which panel is hereinafter shown asfconsisting of two parallel plates between which is an intermediate filling of asbestos or other non-conducting and non-' y combustible substance.

In order that the stile may be strongly clamped or held to the separate molding, it will be observed, by reference to Figs. 3 and 4, that in the depressed fioor or channel, D, formed in the insidemolding member, D, there are made a number of openings or slots, l0, and that in the floor of the channel formed in the outside molding member, F there are punched out a number of tongues, 12, whereby when the two members of the separate molding are fitted together, the tongues of the one member will enter the corresponding slots of the other member so that when one member is moved Arelatively to the other, the tongues interlock with theI slots and thusmake a strong clamp forjsecuring the stiles to the molding, it boing understood that the inside molding member is rigidly held to kthe stile. There the stiles and' cross rails intersect, for instance as shown at 13in Fig. 3, the seam is welded together,'and the top and bottom of the door vis closed by means of a channel member, 14, which may be fastened by spot-welding or by any other well known means.

In making the door with one steel panel and one panel composed of glass, the con struction will not ydepart materially from that before described for by reference to Fig. 2 it will be observedthat the inside molding member, D2, at the top of the central rail, c', and the outside separate molding member, E2, are each constructed as'before mentioned and that the two members areheld together by the tongue land groove connection shown in FigsB and 4.

The top rail of the door when using the glass panel, may be fashioned with the in* tegral molding and there will be present the depressed channel for the top edgevof thev glassvplate or sheet. I, therefore, use the same character of molding on top of the center rail when using the glass `panel as I use at the inner edges of the Stiles, and in fitting the glass panel in place, I slide the same in from the top of the door and then place the top rail in position and secure the same in the usual manner.

From the foregoing description it will be apparent that a prominent feature of the invention is that the panels and the top, bottom and center rails are formed of single sheets of metal, one on each side of the door, these sheets being fashioned with permanent molding portions and the space between the depressed parts forming. the panel beingl filled with asbestos or other suitable nonconducting material. The separate moldings are attached to the stiles so that they will match the permanent molding between the panel and top, bottom, and center rails. The separate molding having the groove for the edges of the panel and being composed of a single piece of metal will stiffenthe Vertical sides of the panel and make the door very rigid, while the tongue-and-slot connection between the outside molding member and the inside molding member which is attached rigidly to the stile, will produce a clamping combination which will stiften and hold the 2. In a metal structure of the character I described, the combination with the stiles thereof, of front and back plates each formed with integral cross-rails a panel and a permanent trim portion at the margin of the panel, and a. separate trim corresponding to the permanent trim and comprising two members with similar channeled por tions fitting one within the other, one of said members being fixed to a stile and the other member having the panel fitting its channel,.and a tongue-and-slot connection between the channeled portions of said members. l

8. In a metal structure of the character described, the combination with a hollow stile, of a face plate formed with a panel portion and a permanent part of a panel trim, and a separate panel trim composed of two companion members one fixed within the hollow of the stile and having a central channel, and the other having a channel and a corresponding projection adapted to enter the channel of the first-named member, said panel fitting edgewise the channel in the seeond-named member one of said members having slots in the bottom of its channel, and the other member .having projecting tongues adapted to interlock with said slots to secure the trim to the stile.

4.`In a sheet metal structure of the character described, the combination with a stile ilo iii

formed ifi? zr single piece of metzii anti bent S0 is to assume suiistantiaiiy :1 rectangular form in erese section, :i 'aee phite formed with ai panel portion und :i permanentI part the ijizinei-trim, :i` separable trim-member fitted within the i'ioiiow of the stile between the inner edges thereof find having :i Ciepressed ehfinnei :it its outer edgesA overlapping the inner edges of iiie stile, said edges of the siiie being` eunfineii bei ween the enter edges of the seeoi'ni-nameli irim member :1mi the iirstnemei'i triin-meini'iei', anni said seemii-mnneii trim-men'iber haring :1 central depri on anni :i eoi'respomiing projecting pnrtion adapted to it within the depression ef the first-minimi irim-member7 .saisi (iepression in the sei-omiimmeil trim-member mhiiieii to reeeive ihe elige of the panel, :inzi tenger-:e projeetinrf ifi-em the bottom ot' the iielirehsim'i in the Sintomi-inlined trimmei'niier uifiniiteri to eneueje the shits in the iirxtnameti trim-member te thereby sei-nre the trim to the, stiie.

5. In :i ineizii structure of the (.fhairmter described, the combination with :1. hoiiow `siiie having ai. pluie fitted eeross: between the inner edges thereof, Sinni pluie having' :i eentrni depression, und :i trim member han'- ing n centrali (ieliression anni arm-responding' projection :uhipieli to enier the iiepree Sien in sziifi plate, :i tongne-innl-siot eoimeetion h ei\\'een the bottom of the trim-member :imi said phite, :1mi :i punei having its edge. portion fitting the depreesion in the. irimmember.

in testimony \\'here i: I :iii'x my signature in presence of two witnesses.

NILS i?. JUBIUNR 'Witnesses i Heimen CLARIN, WILLIAM ULSOX. 

